<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <script>
    function clickCounter() {
      if (typeof(Storage) !== "undefined") {
        if (localStorage.clickcount) {
          localStorage.clickcount = Number(localStorage.clickcount) + 1;
        } else {
          localStorage.clickcount = 1;
        }
        document.getElementById("result").innerHTML = "您已经点击这个按钮 " + localStorage.clickcount + " 次。";
      } else {
        document.getElementById("result").innerHTML = "抱歉！您的浏览器不支持 Web Storage ...";
      }
    }
  </script>
</head>
<body>

<p><button onclick="clickCounter()" type="button">请点击这里！</button></p>

<div id="result"></div>

<p>请点击按钮时计数器递增。</p>
<p>请关闭浏览器或标签页，然后再试一次，计数器将继续计数（不会重置）。</p>

</body>
</html>